Some aqueous media for preserving algae for class 
material. 
W. A. SETCHELL AND W. J. V. OSTERHOUT. 
amined and studied with nearly as satisfactory results as those 
afforded by the fresh material of the same forms 
The first difficulty can be overcome more or less readily. 
Fresh water Species are more or less abundant in our ponds, 
brooks and rivers, and the increasing facility of access to the 
sea brings the marine forms within the reach of many. Esp 
cially do the facilities offered by the marine laboratories,sue) | 
€conomically obtained. -velled 
‘ d of preserving in strong alcohol shrivel 
the specimens to such an extent that the use of strong swe 
to the particular specimen to b better, Ye 
é € preserved, was be 
proved decidedly unsatisfactory for the more delicate a 
The ordinary English method of fixing in a saturated 5° 
[140] 
